不知 Traditional form: 不知 Pinyin (reading): bùzhī Definitions: not to know unaware unknowingly fig. not to admit (defeat, hardships, tiredness etc) Characters: 不 - no, not, un-; negative prefix 知 - to know, to perceive, to comprehend Traditional characters: 不 - no, not, un-; negative prefix 知 - to know, to perceive, to comprehend